13 books in series

Battlestar Galactica

Battlestar Galactica is a 13-book series with 13 released primary works first released in 1978 with contributions by Glen A. Larson, Robert Thurston, Richard Hatch, Nicholas Yermakov, Glen A.; Thurston Robert Larson, Ron Goulart, and Thurston.

Battlestar Galactica
The Cylon Death Machine
Resurrection
The Young Warriors
Galactica Discovers Earth
War of the Gods
Greetings From Earth
Experiment in Terra - Battlestar Galactica 09
The Long Patrol
Battlestar Galactica 11: The Nightmare Machine
Battlestar Galactica 12: "Die, Chameleon!"
Battlestar Galactica 13: Apollo's War
Battlestar Galactica 14: Surrender the Galactica!